What's behind the Pakistani Taliban's insurgency?

There's grief and anger in Pakistan after dozens of people are killed in an attack at a mosque in Peshawar. The Pakistani Taliban has been blamed, but were there security failures? And can the embattled government win the war against the armed group? Join host Folly Bah Thibault. Guests: Imtiaz Gul - Executive Director of the Center for Research and Security Studies. Javaid Ur Rahman - Parliamentary Correspondent for Pakistan's daily English-language newspaper, The Nation. Mosharraf Zaidi - Founder and Senior Fellow at Tabadlab.